Coupling.



B. F. SPARE. GOUPLING. APPLICATION FILED rm.5,191o.

9?LS2L Patented Sept 27, 1910.

iraitvzna,MIN F. SPARE., or NEW YoRK, N. Y.

coUPLING. 'A

Specification of Letter's Patent. Patented Sept. 2.7, 1910.

Application filed February `5, 1910. Seri-a1 No. 542,168.

To all whom 'it may concern:

Y Be it known that I, BENJAMINYF. SrAnn,

' a citizen of the United States, vand a res1- dent ofthe borough of Brooklyn, of the city ofNew York, in the State of New York,

whose post-oflice address is No. 341 Hancock street, in said borough of Brooklyn, have made certain new and useful Improvements 1n Couplings, of which the following is a specification, reference being had to the accompanying drawings, forming 4a part hereof.

The object of the invention is to provide struction and assembling of machinery and mechanism of various sortsv that shafts and the like have to be provided, or are preferably provided, in two or more parts .which arey required tobe united in theA completed mechanism; and in most instances where suchv is the case, the coupling of the two parts has t-o be done withoutslippinr or sliding the coupling parts over the shaft or other device. have been devised to meetcases like those just referred to and also to provide a quick and convenient means of uniting any' two such members, whatever their particular conditions of use may require. In the drawings, where a convenient and ractical embodiment of the invention ifs lllustrated as applied to shafts, Figure 1 is a viewof the coupling in section, taken longitudinally of the shaft. Fig. 2 is a similar view, but with the plane Vof section at right angles to that of Fig. l, and, Fig. 3 is a View in section, showing a modification.

The two parts of the shaft, lthat is, the two members or bases to be coupled, are

shown at a and b. Their abutting ends are threaded and they are provided with nuts c which constitute fastening means for a divided ring al; the latter envelops the nuts and is adapted to be rigidly securedthereto. The fastening of the ring to the nuts is effected by threading the two shaft parts differentially and by providing the nuts with peripheral flanges e, undercut as at n, so that when the nuts arerotated the same way they may be moved in opposite directions with the result that said flanges may be made to The presentimprovements tightly grip the sides of a recess f in the in-- ner periphery of the ring. the latter is so constructed that the flanges, when the nuts are in close-proximity, will readily fit into'the same, and its sides are The recess in also preferably undercut, as at g, so as to fit squarely upon the outward sides of the flanges e when the nutsare separated. It

will be understood, of course, that one of the nuts might be made fast to the corresponding base member or shaft part, so long as the other nut has movement relative thereto, but I prefer to make the device as shown with two nuts differentially threaded to the two base members. It vwill be obvious that the rotation of the nuts in one direction willv separate the nuts while rotation in the reverse direction will bring' them together and enable4 the device to be disassembled.

Ordinarily,the friction between the outer ring l and the nuts @will be suliicient to cause the nuts to.`otate in the. same direction that the ring is turned. But, if desired, a key lz may be provided, preferably set in the outer ring (l as shown, and, `when the ring is inserted in position, lying in a groove formed in theflangcs of the nuts. When the latter are expanded against the ring so l threaded into the ring d and having a'v cone-shaped "shank 7c.

If desired, one of the base members or shaft parts. may have a projecting end Z which fits into a corresponding recess in the opposing end of the other base member or shaft part, thus making the shaft practi cally-continuous, and relieving the coupling of considerable strain. It willbe understood, too,.that the outer ring d may be made in any desired shape', as folinstance to constitute afly Wheel or a pulley, and thus may be made' to serve any useful purpose to which itl may be adapted. Finally, in Fig. 2 the outer ring d' is shown as divided in. equal parts, but, obviously, as shown in Fig. 3, it may be otherwise divided if desirable.

Various other changes may be made without departing from the spirit of the iuvention'.

ing end fitting into the end of the other, of I nuts threaded thereto-respectively so as to move in opposite directions when rotated'the same way, and a divided member adapted to tit around said nuts and to be engaged thereby when the nuts are rotated to move them apart.

3. The combinationwith two members to be coupled, of nuts threaded thereto res ecti'vely so as to move in opposite directions when rotated the same way, and a divided ring having a recess around its inner periphery into which said nuts are adapted to projec y.

4. The combination with two members to be coupled, of nuts threaded thereto respectively so as to move in opposite directions when rotated the same way, said nuts havin projecting undercut flanges, and a divide Aring having a recess with undercut sides and 'in which said ianges are adapted to it so as to engage said sides.

5. The combination with two members to be coupled, of nuts threaded thereto respectively so as to move in opposite' directions when rotated the same way, said nuts having projecting undercutiianges,"a divided ring having a recess with undercut sides and in which said flanges are adapted t, fit so as to engagesaid sides, and a separating member for the nuts;

6. Thecombination with two members to be coupled, of nuts threaded thereto respectively so as to move 1n opposite directions when rotated the same way, said nuts having rejecting undercut flanges, a divided ring iiaving a recess with undercut sides and in which said flanges. are adapted to tit so as to engage said sides, and a wedge member threaded into the ring and adapted to lock the nuts.

7. The combination with two members to when rotated the same Way, a divided member adapted to fit around said nuts and to be engaged thereby when the nuts are rotated to move them a art and a' key iitted between said nuts and t ie divided member, said nuts lhaving seats within which the'key fits whereby as the divided member is rotated, the

nuts will be rotated uniformlythrough t-he medium of the key.

This s cifcation signed and witnessed this 3rd ay of Februar A. D., 1910,

BENJA IN F. SPARR. Signed in the resence of-.

JOHN W. HoMPsoN, G. MCGRANN. 

